TABLE 3.
Counts of S. enterica strains in BHI at 4°C, 7°C, and 12°C, determined by plate count on XLD agar.
Temperature | Day | S. Thompson 688 | S. Typhimurium 689 | S. monophasic Typhimurium 1006 | S. Enteritidis 1023 | S. Montevideo 1024 | S. Senftenberg 1025 |
4°C | 0 | 1.24 ± 0.02 | 1.27 ± 0.05 | 1.31 ± 0.05 | 1.30 ± 0.09 | 1.30 ± 0.06 | 1.23 ± 0.07 |
5 | 1.50 ± 0.13 | 1.78 ± 0.01 | 1.54 ± 0.19 | 1.62 ± 0.07 | 1.52 ± 0.05 | 1.31 ± 0.17 | |
9 | 0.89 ± 0.14 | 1.77 ± 0.07 | 1.52 ± 0.12 | 1.72 ± 0.18 | 1.62 ± 0.06 | 1.45 ± 0.08 | |
14 | 0.71 ± 0.41 | 1.39 ± 0.08 | 1.37 ± 0.05 | 1.56 ± 0.12 | 1.22 ± 0.24 | 1.12 ± 0.10 | |
7°C | 0 | 1.24 ± 0.02 | 1.27 ± 0.05 | 1.31 ± 0.05 | 1.30 ± 0.09 | 1.30 ± 0.06 | 1.23 ± 0.07 |
5 | 1.95 ± 0.13 | 2.03 ± 0.15 | 1.22 ± 0.07 | 2.06 ± 0.04 | 2.05 ± 0.04 | 1.99 ± 0.08 | |
9 | 1.89 ± 0.09 | 2.02 ± 0.02 | 0.98 ± 0.05 | 2.07 ± 0.23 | 2.20 ± 0.07 | 1.91 ± 0.04 | |
14 | 0.85 ± 0.71 | 1.32 ± 0.14 | 0.26 ± 0.24 | 1.95 ± 0.15 | 1.70 ± 0.10 | 1.10 ± 0.28 | |
12°C | 0 | 1.24 ± 0.02 | 1.27 ± 0.05 | 1.31 ± 0.05 | 1.30 ± 0.09 | 1.30 ± 0.06 | 1.23 ± 0.07 |
5 | 9.03 ± 0.13 | 8.71 ± 0.02 | 8.99 ± 0.02 | 9.12 ± 0.08 | 9.19 ± 0.02 | 8.98 ± 0.17 |
Data represent the mean of triplicates ± SD (log CFU/mL).